344 PROCEEDINGS OF SECTION G, 
The coagulation action is due to the production of lactic 
acid from the lactose, or milk sugar, by the bacteria and no 
subsequent peptonising effect takes place on the caesin. “ 
The action of the organisms in the sterilised milk was shown 
to be more vigorous and healthy when free access to oxygen was 
given through using sterilised cotton wool plugs. 
THe Lactic Acip Bacteria. 
An examination of the bacteria microscopically x 1000, 
showed them to be very short rods with rounded ends, and rang- 
ing in length from 1 to 1} +, and in thickness from .5 to 
.8 4. They occur singly, or in chains, threads, or filaments. 
The bacillus is non-motile, and divides by fission. No spore 
formation has been noted. It does not liquefy gelatine. It 
gives a delicate translucent bluish, or mother-of-pearl growth, 
with wavy margins, on a gelatine or agar surface. 
With a stab culture in gelatine or agar, growth takes place 
more rapidly at the surface. It extends slowly along the track 
of the needle, with rounded colonies at the end of the growth, 
showing the organism to be facultative anaérobic. 
No chromogenic or pigment formation or production has been 
observed in any of the cultures. 
The protoplasm of the bacillus stains well and uniformly with 
the ordinary dyes, such as methylene blue or fuchsin. 
Thirty cultures of this bacteria have been prepared and dis- 
tributed to several of our principal butter factories, where prac- 
tical tests and demonstrations have been conducted. 
The results throughout are satisfactory. Amongst a number 
of reports to hand we are permitted to quote the following, 
relating to two samples of butter manufactured at the Kyneton 
Butter Factory. They were judged and bacteriologically ex- 
amined ten days after manufacture, and during this time they 
were kept at normal room temperatures. 
Report on two samples of butter from the Kyneton Butter 
Factory, submitted to Mr. A. Simpson, care of Messrs. Dalgety 
and Co., Melbourne :— 
Maximum Points. Minus Points. 
Mark or bE 
| Milky 
Brand Mottle 
4 Tex- | Salt- Pack- \ | 2or/ | otal 
Flavor. ture. Colour. ing. | ing. Total. Streak ‘Cloudy Award. 
7 ‘ Brine. 
= 500011195. |) te) 10 | os baoo [aS baer 
No. 1 4g | 25 | 45..) 10 | — 1; 684) =e 
No. 2 46 | 23 15:}'-10. b=" ga 74S) ee 
| 
